99173215969 has 8 divisors (see below), whose sum is σ = 102404277248. Its totient is φ = 95944150080.

The previous prime is 99173215961. The next prime is 99173215987. The reversal of 99173215969 is 96951237199.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99173215969 - 2³ = 99173215961 is a prime.

It is a super-2 number, since 2×99173215969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99173215961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397497 + ... + 596950.

It is an arithmetic number, because the mean of its divisors is an integer number (12800534656).

Almost surely, 2^99173215969 is an apocalyptic number.

It is an amenable number.

99173215969 is a deficient number, since it is larger than the sum of its proper divisors (3231061279).

99173215969 is a wasteful number, since it uses less digits than its factorization.

99173215969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997695.

The product of its digits is 8266860, while the sum is 61.

The spelling of 99173215969 in words is "ninety-nine billion, one hundred seventy-three million, two hundred fifteen thousand, nine hundred sixty-nine".